Abstract
Silicon/carbon and silicon/carbon/graphite composites have been synthesized at room temperature using concentrated as a dehydration agent. As a ductile matrix, the novel amorphous carbon obtained from the dehydration process could effectively buffer the volume change of silicon particles during discharge–charge cycling. The introduction of graphite in the silicon/carbon composite further improved the cycling performance. The composite with of amorphous carbon replaced by graphite demonstrated a stable capacity of and a high capacity retention ratio of 84.1% at over , suggesting it is a favorable candidate as anode material for lithium-ion batteries.
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